Counting Elements and Atoms

Front

What is the total number of atoms in the chemical formula (NH4)2SO4?

Back

15

Front

If there is no subscript following the element symbol, how many atoms are present?

Back

only 1

Front

How many atoms are in the formula Zn(NO3)2?

Back

9

Front

How many different elements are present in the chemical formula Zn(NO3)2?

Back

3

Front

What is the second letter of an element symbol always?

Back

lowercase letter

Front

What does a subscript in a chemical formula indicate?

Back

The number of atoms of the element in the molecule.

Front

In the formula H2O, how many hydrogen atoms are there?

Back

2

Front

What is the chemical symbol for Zinc?

Back

Zn

Front

How many total atoms are in the formula C6H12O6?

Back

24

Front

What is the significance of the parentheses in the formula (NH4)2SO4?

Back

It indicates that the group NH4 is present twice.